BUILDING ACOUSTICS最新文献_第3页

Evaluation of the dynamic response for scaled models of shaped concrete floor slabs 异形混凝土楼板按比例模型的动力响应评估

IF 1.7

BUILDING ACOUSTICS Pub Date : 2023-03-14 DOI: 10.1177/1351010X231157613

Jonathan M Broyles, Micah R. Shepherd, Nathan C. Brown

引用次数: 0

The influence of a thin, natural cellulose fibre membrane on the acoustic absorption of a layer of melamine foam 薄的天然纤维素纤维膜对一层三聚氰胺泡沫吸声的影响

IF 1.7

BUILDING ACOUSTICS Pub Date : 2023-02-21 DOI: 10.1177/1351010X231154171

Wenhao Xu, K. Horoshenkov, Yun Jin

{"title":"The influence of a thin, natural cellulose fibre membrane on the acoustic absorption of a layer of melamine foam","authors":"Wenhao Xu, K. Horoshenkov, Yun Jin","doi":"10.1177/1351010X231154171","DOIUrl":"https://doi.org/10.1177/1351010X231154171","url":null,"abstract":"Porous materials such a melamine foam are commonly used to absorb noise and to control reverberation time in buildings. However, the ability of a thin porous layer to absorb noise at acoustic wavelengths that is much greater than the layer thickness is limited. This work investigates theoretically and experimentally the influence of a very thin, natural cellulose membrane on the sound absorption coefficient of a melamine foam substrate. The experimental results demonstrate that the presence of a 120 μm cellulose membrane can more than double the sound absorption coefficient of a relatively thin (17.4 mm) layer of melamine foam at frequencies above 600 Hz (577 mm wavelength). The theoretical part of work explains this effect through a careful simulation. The results show that there are analytical models that can accurately predict the acoustical behaviour of the cellulose membrane combined with a layer of melamine foam. The effects of the flow resistivity and thickness of a cellulose fibre membrane on the acoustic absorption coefficient of the melamine foam substrate are also studied through modelling and experiment. It is found that the optimum thickness of the cellulose fibre membrane should be between 75 and 100 µm when laminated on the top of a 20 mm melamine foam substrate. This work suggests that thin layers of sustainable natural materials such as cellulose fibres can be used to significantly improve the ability of traditional porous media to absorb sound.","PeriodicalId":51841,"journal":{"name":"BUILDING ACOUSTICS","volume":"30 1","pages":"127 - 142"},"PeriodicalIF":1.7,"publicationDate":"2023-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43858797","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Self-rated health implications of noise for open-plan office workers: An overview of the literature 自评噪音对开放式办公室工作人员的健康影响:文献综述

IF 1.7

BUILDING ACOUSTICS Pub Date : 2023-02-15 DOI: 10.1177/1351010X231152841

Sofia Felipe Contin de Oliveira, F. Aletta, Jian Kang

{"title":"Self-rated health implications of noise for open-plan office workers: An overview of the literature","authors":"Sofia Felipe Contin de Oliveira, F. Aletta, Jian Kang","doi":"10.1177/1351010X231152841","DOIUrl":"https://doi.org/10.1177/1351010X231152841","url":null,"abstract":"In open-plan offices (OPO), workspaces without ground-to-ceiling dividers, noise is one of the most complained about aspects, causing physical and psychological impacts. With the increasing interest for a human-centric design, notably after the publication of ISO 22955, this review aims to identify the main noise sources in this office layout and the employees’ perception of related health effects, evaluating the interventions proposed to overcome their impacts. Following the PRISMA guidelines, a review was conducted using the Scopus and PubMed databases, considering subjective questionnaires distributed in offices, which could include physical workspace assessment. It excluded studies limited to: (a) laboratory experiments; (b) isolated cognitive tests; (c) office layouts other than OPO; (d) systematic reviews; and (e) mathematical models. Sixty studies were identified and the screening process resulted in 11 selected for inclusion, which indicated irrelevant speech, chatting, and telephone ringing as the main noise sources causing productivity loss, stress, and low comfort rates due to distraction and lack of privacy. To overcome these impacts, researchers suggested the use of sound-absorbing surfaces, separated zones for different tasks and headphones, although their effectiveness relies on human behaviour and economic feasibility. Thus, the evidence indicates that noise is a recurrent issue in OPOs, it demonstrates the importance of appropriate acoustic performance of the workspace and the necessity of new studies regarding OPO workers’ perception of noise and their health, particularly after the COVID-19 new safety guidelines.","PeriodicalId":51841,"journal":{"name":"BUILDING ACOUSTICS","volume":"30 1","pages":"105 - 125"},"PeriodicalIF":1.7,"publicationDate":"2023-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43550716","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Numerical investigation on 2D metamaterial under normal incidence 二维超材料法向入射的数值研究

IF 1.7

BUILDING ACOUSTICS Pub Date : 2023-01-26 DOI: 10.1177/1351010X221147816

Anil Pundir, Arpan Gupta, U. Berardi

{"title":"Numerical investigation on 2D metamaterial under normal incidence","authors":"Anil Pundir, Arpan Gupta, U. Berardi","doi":"10.1177/1351010X221147816","DOIUrl":"https://doi.org/10.1177/1351010X221147816","url":null,"abstract":"Investigations in solid-state physics show that metamaterials, a kind of periodic material, can produce a band of frequency gap. When a sonic wave’s frequency falls into this frequency gap, it cannot propagate. Enlightened by the concept of frequency gap, researchers recently investigated various metamaterials. The search for bandgap(s) is critical in such innovations. The present letter presents the analysis of the band of frequency gap(s) for two and three-component systems as 2D period materials using the Finite Element Method. The investigation highlights the influence of geometrical parameters on the bandgap. Modelled metamaterial uses a core of aluminium, a coating of natural rubber and a matrix of air. For the lattice constant’s specified value, with the core’s increasing size, the bandgap shows to increase. The general effect of the coating leads to the flattening of the dispersion curve. For the square lattice and circular core, the bandgap appears around a net core size (with and without coating) of around 30%–32% of the lattice constant. Multiple frequency bandgaps appear of substantial sizes at the core’s threshold size, that is, when the core’s net radius is equal to half of the lattice constant. The softer material coating is found as a potential alternative to tune and control acoustic metamaterials. With a three-component system, bandgaps appear comparatively at significantly lower frequencies. Lower edge frequencies for such bandgaps are found to be independent of the core and coating size.","PeriodicalId":51841,"journal":{"name":"BUILDING ACOUSTICS","volume":"30 1","pages":"75 - 90"},"PeriodicalIF":1.7,"publicationDate":"2023-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48158639","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Analysis of the sound insulation performance of periodic wall structures by a virtual acoustic laboratory 基于虚拟声实验室的周期墙结构隔声性能分析

IF 1.7

BUILDING ACOUSTICS Pub Date : 2023-01-26 DOI: 10.1177/1351010X221136709

E. Perras, M. Mellmann, Chuanzeng Zhang

{"title":"Analysis of the sound insulation performance of periodic wall structures by a virtual acoustic laboratory","authors":"E. Perras, M. Mellmann, Chuanzeng Zhang","doi":"10.1177/1351010X221136709","DOIUrl":"https://doi.org/10.1177/1351010X221136709","url":null,"abstract":"The propagation of acoustic waves in periodic structures, also known as phononic crystals or PCs, is prohibited in certain frequency ranges, which are referred to as the frequency band-gaps. The existence, the location and the width of the frequency band-gaps are mainly determined by the geometrical parameters and the material properties of the PCs. In this work, a virtual acoustic laboratory based on a fully coupled fluid-structure interaction (FSI) model is developed to determine the sound insulation capacity of one-dimensional (1D) and two-dimensional (2D) periodic walls. The FSI model is discretized using the frequency-domain spectral element method (FDSEM), which is an advanced finite element method (FEM) using special high-order shape functions. Following the guidelines of the ISO10140, the setup of the developed FSI model allows us to take into account the essential physical phenomena, especially the interaction of the wall structure with the fluid domains (air). The FSI model based on the FDSEM increases the computational efficiency and accuracy in comparison with the standard FEM. Several numerical examples will be presented and discussed to show that the designed periodic walls in certain frequency ranges within the band-gaps may exhibit much better sound insulation capabilities than monolithic walls.","PeriodicalId":51841,"journal":{"name":"BUILDING ACOUSTICS","volume":"30 1","pages":"25 - 52"},"PeriodicalIF":1.7,"publicationDate":"2023-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48600074","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

A model study of low-frequency noise exposure indoors due to road traffic 道路交通导致室内低频噪声暴露的模型研究

IF 1.7

BUILDING ACOUSTICS Pub Date : 2023-01-11 DOI: 10.1177/1351010X221143571

Jens Forssén, G. Zachos, Carmen Rosas Pérez, W. Kropp

引用次数: 0

Just noticeable difference of loudness through building wall of masonry and drywall 砌体和干墙建筑墙的响度差异很明显

IF 1.7

BUILDING ACOUSTICS Pub Date : 2023-01-10 DOI: 10.1177/1351010X221140808

Francisco Cerigliano, Shin-ichi Sato

{"title":"Just noticeable difference of loudness through building wall of masonry and drywall","authors":"Francisco Cerigliano, Shin-ichi Sato","doi":"10.1177/1351010X221140808","DOIUrl":"https://doi.org/10.1177/1351010X221140808","url":null,"abstract":"In this study, the just noticeable difference (JND) of loudness with respect to sound transmission through walls corresponding to a weighted noise reduction index Rw of 43 dB is investigated. Two types of walls typically used in Argentina are evaluated. One is masonry composed of solid autoclaved aerated concrete bricks with a thickness of 25 cm, and the other is a drywall composed of two 12.5 mm plasterboards with a 25 cm air chamber in between them, filled with glass wool. The JND is determined using the method of constant stimuli for both ascending and descending variations. The source signals used are two types of vacuum-cleaner sounds and two music signals. Online tests are conducted owing to restrictions imposed by the COVID-19, and the presentation level of the stimuli is adjusted based on the sensation level of each individual. Responses from 148 different listeners show no significant difference in the subjective responses among the source signals. Regarding the masonry, the JND values are 3.02 and 1.62 cm for the ascending and descending variations, respectively (corresponding Rw difference of 2 and 1 dB), whereas they are 4.55 and 1.26 cm for the drywall, respectively (1 dB for both).","PeriodicalId":51841,"journal":{"name":"BUILDING ACOUSTICS","volume":"30 1","pages":"53 - 73"},"PeriodicalIF":1.7,"publicationDate":"2023-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46553210","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Sound transmission loss of LC3-based mortars with barite and waste rubber 重晶石和废橡胶LC3基砂浆的隔声损失

IF 1.7

BUILDING ACOUSTICS Pub Date : 2022-10-20 DOI: 10.1177/1351010X221129264

Begüm Söyek Abay, L. Tanaçan

{"title":"Sound transmission loss of LC3-based mortars with barite and waste rubber","authors":"Begüm Söyek Abay, L. Tanaçan","doi":"10.1177/1351010X221129264","DOIUrl":"https://doi.org/10.1177/1351010X221129264","url":null,"abstract":"This study investigates developing a single-layer composite material to provide acoustical comfort conditions due to sound transmission in a building. The aim of the study is to increase the sound transmission loss (STL) of mortars produced with LC3 (limestone calcined clay cements)1 ecological binder, barite, and rubber aggregates compared to Portland cement and river sand aggregate mortars. The flow and aggregate/binder ratios by volume in each mortar mixture were kept constant and compared. Instead of river sand aggregate, barite aggregate was used to provide weight, which is one of the most important parameters effective in sound insulation and waste rubber aggregate was used to control stiffness. Mortars were produced in 40 × 40 × 160 mm for experimental analyses that include unit weight, capillary of water absorption, open porosity, and compressive and flexural strengths, while in 90 mm thick cylindrical mortars were produced for sound transmission loss measurements. As a result of the experimental study, it is revealed that mortar with LC3 binder, two-part barite, and 1-part waste rubber aggregate by volume (LC3-2B1R-8) can be used as an acoustical material for sound insulation. Using combined aggregates (barite and rubber) for increasing the sound insulation properties of the mortar is very effective not only in high frequencies but also in low frequencies. The study also shows that increasing the weight of the mortars does not always increase the sound insulation properties of the material.","PeriodicalId":51841,"journal":{"name":"BUILDING ACOUSTICS","volume":"29 1","pages":"503 - 528"},"PeriodicalIF":1.7,"publicationDate":"2022-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48935542","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Single-number values versus subjective judgment of airborne sound insulation in dwellings 住宅空气中隔声的单数值与主观判断

IF 1.7

BUILDING ACOUSTICS Pub Date : 2022-10-20 DOI: 10.1177/1351010X221131390

T. Rauscher, R. Neubauer, Maria Zaglauer, P. Leistner

{"title":"Single-number values versus subjective judgment of airborne sound insulation in dwellings","authors":"T. Rauscher, R. Neubauer, Maria Zaglauer, P. Leistner","doi":"10.1177/1351010X221131390","DOIUrl":"https://doi.org/10.1177/1351010X221131390","url":null,"abstract":"There is a long history of adapting airborne sound insulation in buildings to the actual needs. A first pan-European work was published with COST Action TU0901: Integrating and Harmonizing Sound Insulation Aspects in Sustainable Urban Housing Constructions in which the differences between the sound insulation measure and the standard sound level difference were documented. Furthermore, ISO 16283-1: Field measurement of sound insulation in buildings and of building elements—Part 1: Airborne sound insulation states: Compared to DnT, R’ has a weaker connection to the subjective impression of airborne sound insulation. To investigate this relationship a simplified listening test and a computer-simulated variation studies of a synthesized airborne sound insulation were carried out. A test sound was generated from a speech, a music, and a noise signal, each of which was filtered by six frequency responses of solid structures. In a paired comparison task, 16 participants judged the loudness of the resulting 18 sounds. The results of the listening test show that perceived loudness is significantly correlated to the single number quantity DnT,w but less to the single number quantity R’w. This finding was confirmed across all signal types. Thus, the results confirm the statement in ISO 16283-1, that the single number quantity DnT,w has a stronger connection to the subjective impression of airborne sound insulation as the quantity R’w.","PeriodicalId":51841,"journal":{"name":"BUILDING ACOUSTICS","volume":"30 1","pages":"91 - 101"},"PeriodicalIF":1.7,"publicationDate":"2022-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41453045","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Classroom acoustic conditions and primary school children’s behaviour: A scoping review 教室声学条件与小学儿童行为:范围审查

IF 1.7

BUILDING ACOUSTICS Pub Date : 2022-10-14 DOI: 10.1177/1351010X221126680

Kiri Mealings

引用次数: 2